Transformers are the heart of power systems, and their sustained reliable performance is critical to overall grid stability and reliability.
DC resistance testing is essential for transformer manufacturing—covering semi-finished/finished product factory checks, installation handover tests, and power department preventive testing. It detects coil defects (material issues, welding faults, loose connections, missing strands, wire breaks) and post-operation hidden risks efficiently. Built on our company’s technical expertise to meet the need for rapid DC resistance measurement, our transformer DC resistance tester is a new-generation fast tester with integrated three-phase testing (Yn, Y, △) and demagnetization. It is the perfect tool for measuring DC resistance in large power transformers. Featuring a true-color high-resolution industrial screen, full touch operation, and Chinese menu prompts, it offers intuitive operation, fast testing, high precision, and a wide measurement range.
Panel introduction
1. High voltage terminal
Connect to transformer high voltage side bushing .
2. Test wiring diagram
3. Capacitive touch screen.
Display size 7.0 inches; resolution 1024×600.
4. Notes
5. Ground terminal
The instrument must be reliably grounded. There may be paint or rust on the on-site grounding point, which must be removed.
6. Power on/off key
Turn on the power switch for about 2 seconds to start up.
7. Printer
Print test results.
8. USB interface
An external USB flash drive is used to store test data; please use a USB flash drive in FAT or FAT32 format; during the storage process, it is strictly prohibited to remove the USB flash drive.